wawy

Hi guys,

I plan on hitting a Mustang Dyno with my C55 in the near future to get a few baselines and to see what my Renntech CF Airbox delivers. I've done a search and have read some conflicting information about a few things.

Can someone please provide me with the proper technique to put a 2006 C55 in dyno mode?

Also, would it be best to dyno my C55 in 3rd or 4th in "M" mode?

Any other tips or suggestions??

I'll post the results when I'm done and hopefully will add a 3rd dyno that proves the Renntech Airbox makes power....

rockjock

DYNO MODE-
make sure that the middle screen is on your trip counter thingy-
insert key and turn to ON (not start) and push the button thingy on the bottom left of display (reset button) 3 times in a row (pretty quick, but not like you're having siezure or anything)-welcome to fun with no limits
My guess-dyno pull in third (I dont think S or M would matter-M would let you rev it out-but the motor is strained at that point so you would gain much but a longer graph)-
enjoy and post results!

JonMBZ

Just so you know it's a sticky at the top of the forum.

DonJuan

Nice ride...be sure to post those results.

loungn14

yup, 3rd gear, and don't expect high numbers....mustangs run on the lower side of the number range....

wawy

Thanks guys...
I'll make sure I post the results..

wawy

I was able to get in to Dyno mode no problem. I drove around for a bit and noticed the following:

While in Dyno mode and with the transmission in "M" or manual mode I was unable to shift the way I wanted to - that is, from a dead stop the car started in 2nd and then once I got up in speed it shifted to 3rd on its own and seemed to stay in there no matter what I tired until I slowed right down again. How am I supposed to start off in 3rd to dyno? Or, do I let it start off in 2nd when I'm on the dyno (not that it seems I have a choice) and then once it shifts into 3rd just hit it?? When I'm not in dyno mode I have no problem choosing my gears. What happens if I hit the dyno without going in dyno mode with just esp off an manually selecting 3rd in "M" mode?? Am I making any sense?

SoCalC55

Regardless of what you put the "manually shifted" gear in it will start in 2nd, unless you select 1st. For example, if you shift to 3rd, it will start in 2nd, shift to 3rd, but then stay there and goto redline.

When you go onto a dyno they start the car and slowly go through the gears until you are in the correct gear, then proceed to go through the rev range.

Do the trans reset, make sure your engine is as cool as possible, and put it in dyno mode/M trans and your all set

Quicktwinturbo

I did pull on 4th and got slightly higher numbers.
When you are in M or S, our cars supposed to start from 1st gear (I think)...
Only C mode will start from 2nd... Do correct me if I'm wrong.

Like others said, put it on the dynomode with tranny reset, go through couple gears slowly and go WOT... Person who operates the dyno should know how to do it properly. If that guy doesn't have a clue, I would not take my car there to dyno..


Good luck and make sure your engine is fully warmed up.. 2-3 runs should do it.

I would guess about 305-310rwhp

SoCalC55

^Agreed
Stock I put down 312/328 in 4th using the peramters i stated above, so id suggest that gear as well. As for engine temp, i meant to say keep it at running temp but if possible keep the engine off and in the shade till just before the run

Quicktwinturbo

312?? Wow! That's a healthy C55!!! and Yea, I know what you meant to say

wawy

Thanks for the responses. One more thing - when I'm in 3rd and floor the accelerator down should I avoid hitting the kickdown button under the pedal?

Quicktwinturbo

Not an expert on this You should press the gas pedal all the way down. Just slowly...

For Ex:

1500-2500 30% Throttle
2500-3000 50% Throttle
3000- Redline WOT

Something like that...

SilverBulletAMG

You don't want the "kickdown" because it will just downshift on you. On a Mustang Dyno you can do a slow roll and it won't make a difference if its a 5 minute slow roll to redline or a 10 second quick burst.
You should expect to get right around 300/300 or just below if stock on a properly setup Mustang dyno.

wawy

Kind of what I thought...

Quicktwinturbo

If you do it in M mode, you shouldn't have any issue of kick down... IMO..

SilverBulletAMG

With the 32's I know for a fact even in "M" shifting on your own, if you put it to the floor to quickly, it will still downshift on it's own. Easy way to find out for sure though, put it in M while driving and pin it in 3rd or 4th from low rpms. My money is on it downshifting.

c32AMG-DTM

wawy, you keep saying "I" - just to make sure it's clear, the dyno shop's dyno operator will take your car, drive it onto the dyno, get everything set-up properly (takes a little bit of time to get it all strapped down), and drive it during the dyno pulls... for shop liability reasons, there's just no way they're going to have you operating the vehicle while it's on the dyno.

Most likely, they will let you stand somewhat nearby and watch, however.

PC Valkyrie

C32's don't have a "M" mode in their transmission. Your button on the transmission toggles between C (or W) and S. On the C55, the button toggles between C, S, and M.

In the M mode of the C55, there is no downshifting even if you kickdown (hence why it is called the "manual" mode, where the transmission does not downshift upon kickdown or upshift even if you hit the rev limiter).

SilverBulletAMG

Depends on the shop. All dyno's I've been to have let me drive.

SilverBulletAMG

I know the 32 doesn't literally have a manual mode. I was referring to the speedstick which allows you to "manually" shift between the gears. Obviously the 32s won't allow you to hold redline or pin it from a low rpm or it will downshift on its own if in higher gears.
Also why I mentioned I wasn't 100% on the 55s. If that's how they work, I'm jealous!

wawy

Actually these guys will let me "drive"....

hooleyboy

When you are on the dyno get the car up to speed and into third gear. using "M" mode. Using "M" mode will prevent the car from kicking down. You dont want kick down on the dyno. The pull should start around 2000-2500rpms at the time you stomp on it and get to WOT.

wawy

Thanks hooley...

c32AMG-DTM

No kiddin'. Learn something new every day.

Apologies - guess I didn't know what I was talking about.

Every shop I've been to has had their dyno operator "driving," and don't even like for the owner to be standing all that closely during the pulls.